Thomas a



(N0 Model.)

T.A.MAGAU LAY.

SEWING MAGHINE.

Patented May 1, 1883,

In Q

wv FETERSrPMIwUbmgnphen Washington. n. c

regulating lever B with the feed-bar.

UNITED STATES PATENT OFFICE.

THOMAS A. MACAULAY, or NEW YORK, N. v.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 276,842, dated May 1, 1883.

T 9 all whom it may concern Be it knownthat I, THOMAS AJMACAULAY,

of the city, county, and State of New York, have invented certain new and useful Improvements in Sewing-Machines, of which the following,w1th the accompanying drawings, is a specification.

part of the feed mechanism, to which some of my improvements relate.

A A is the rear part of the hollow arm. A is the main needle-driving shaft. B B are eccentrics on the main shaft. 0 is a pitman. D D is a pitman-lever. E is a bell-crank lever. F is a stud. G is a shuttleearrying lever. 9 is a pin connecting the pitman C to the bell'erank lever, and serving as a fulcrum for the slotted pitman-lever D D. His a shuttlelever stud. J is a ball-joint. J is a projection from the bed, in which J operates. K is a main feed-lever: K is the short arm of the same. L is a secondary feed-lever. M is a ball on the end of the long arm of the bell-crank lever E. N is a ball on rear end of the main feedlever K. a is a stud-pin connecting the feed- 0 is a stud. P is an extension or bracket of the secondary feed-lever. It is an adjustable stitch or feed regulating lever. S is a slot in the stitch-regulating lever. T is a crank-pin secured to a shaft, T, which projects from a milled-headed thumb-nut, T that is jonrnaled in the bed B, as more fully described in Letters Patent granted to me OctoberlO, 1882, No. 265,686. U is a feed-bar. V is a feedspring. X is a shuttle-carrier. Y is a driving balance-wheel. r is a lip on the lever B.

Motion being given to the main needle-driving sh'at't A the eccentrics B B give a reciprocating motion to the pitman G and pitmanlever D D. The bell-crank lever E being connected to the shuttle-lever G by the ball M,

Application filed January 13, 1883. (No model.)

fitting into a fork in the rear end of the lever G in the usual way, the shuttle receives the requisite motion. slotted and works on the pin 9, and it being connected to themain feed-lever K by the balland-soeket joint N an up-aud-down forwardand-back motion is imparted to its front end, K. The up-and-dowu motion is imparted to the feed-bar U, and the forward-and-baek mo tion to the secondary feed-lever L, the spring V performing the usual function of keeping the feed-bar and lever L in contact with the end of the feed-lever K. Thelength ot' stitch is regulated by moving the feed-regulating lever B to or from the stud or pivot O of the secondary feed-lever L. This movement of the lever B is effected by turning the milled thumbnut T, which is fixed to the shaftT. The crankpinT, fixed to the shaft T, engages in the slot S,

The pitman-lever D D is and moves the lever B to the desired position on the regulating-lever L. The lever B has a lip, 1', which engages with the lever L to receive motion, which is more or less as the lip r engages with the lever L near to or remote from the fulcrum or pivot 0.

In the construction shown the spring V is used to keep the lever L in contact with the lever K K; but it will be readily understood that the extension or bracket P may be slotted and the lever K K, which has a positive motion, may engage the said slot in the bracketextension, and thus impart a positive motion to the lever L, and the spring V be dispensed with. Or, instead of slotting the bracket P, the lever K K may be slotted so that said lever may embrace a pin on said bracket, and also by slotting the feecl bar U longitudinally positive motion may be imparted to all the feeding devices without the use of the spring V, so that without any change in the secondary feed-lever or in themeans of adjustment, and by the employment of any of the common means for giving the main teed-lever K K horizontal movements only, and with any usual means for giving the feed-bar positive up-anddown movement, positive feed mechanism IOO A radius-bar and pin may be used instead of the slot and pin g as a fulcrum for the pitman-lever D D, and other changes within the province of mechanical skill may be made without departing from the spirit of my invention.

Having fully described my invention, I claim- 1. The combination, with the main shaft, of a main feed-lever, mechanism for operating said main feed-lever from said shaft, a secondary feed-lever connected to said main feed-lever, a feed-bar, a feed-regulating lever pivotally secured to said feed-bar, and means for adjusting said feedregulating lever relative to said secondary feed-lever, substantially as set forth.

2. The combination, with the main shaft, of a feed-bar, a main feed-lever connected with said feed-bar and adapted to lift the same, mechanism for operating said main feed'lever from said main shaft, a secondary lever connected to said main feed-lever, a feed-regulat- 3. The combination of the main shaft, an eccentric thereon, apitman-lever, a main feedlever, a secondary feed-lever, a feed-bar, a feedregulating lever pivotally secured to said feedbar, and means for adjusting said feed-regulato ing lever B, and means for adjusting said lever B at the will of the operator, substantially as set forth.

5. The-combination of the main shaft and its eccentric, the pitman-lever D D, the lovers K K L R, and feed-bar U, substantially as set forth.

'6. The combination of the main shaft and eccentrics B B pitman G, leversE and G, pitmau-lever D D, the levers K K L R, and feed-bar U, substantially as specified.

H. J. ENGLAND, A. It. BRoWN. 

